A reversible reaction ($\rightleftharpoons$) is a reaction that can take place in both directions – i.e. forward reaction and backward reaction. When the rate of forward reaction is equal to the rate of backward reaction, the reaction is said to have reached a state of dynamic equilibrium. When a chemical reaction reaches a state of… Continue Reading …

Preparation of Soluble Salts The methods of preparing soluble salts are categorised into: Solution + Solid Solution + Solution Solution + Solid In the “solution + solid” method, a solid and solution are reacted together to form soluble salt. You may follow the following procedures to prepare soluble salts: Add solid, a little at a… Continue Reading …

A salt is an ionic compound formed when the hydrogen atom in an acid is replaced by a metal ion or ammonium ion. Note: Please do not restrict your thinking/interpretation of “salt” to the normal “table salt” in your kitchen. Neutralization is one common reaction whereby a salt is produced. An acid reacts with a… Continue Reading …

Elements react with oxygen (aka. burn in oxygen) in the atmosphere to form oxides. Oxides are classified as: Acidic Basic Amphoteric Neutral Acidic Oxides Acidic oxides react with water to form acids. Recall: Solutions of these acids in water have a pH value of less than 7. Acidic oxides are oxides of non-metals, which… Continue Reading …